"SR" wrote in message
...
Hello guys: Because the radio get hot. I was wondering after turning
it on, how long does the radio needs to take to warm up before I could
use it? And how many hours per night can I use it without blowing a tube
or fuse? I am trying to understand my limmits without abusing it.


I used to keep my SX-62 turned on for nearly all the time I was at home. I
like radio, and the 62 is a general coverage receiver with low VHF and FM.
There's always something to hear on it. It's been on for over a couple of
days several times. If the radio is in good condition, there is no limit.
The power tubes, such as the rectifier and audio output tube, will last
thousands of hours. The small signal tubes will last tens of thousands of
hours.


Also, I have limmited space, do not want to stack other plasic case
radios on top of a tube radio because it gets hot. However, could I
stack a tube radio on top of another tube radio? The idea is that since
both radios are mostly made out of metal and they get hot anyway, I
would think the radio on top should be able to take the heat from the
bottom radio.

That should be fine. I've always have some radios stacked and it's never
been a problem. Actually, the heat probably wouldn't bother most plastic
radios, either. I'll bet they'd get hotter in the direct sun.



Of course if I were to stack tube radios like that I would have a little
space in between them so heat could escape. I wonder if wooden shelves
can absorb heat?

Should be fine. Many tube radios also had wood cabinets.



Also, could I have a tube radio near my computer monitor or CPU? I
don't have it near because I am trying to advoid interference by near by
electronics.

Put the radio where it's convienient. If other electronics interfere with
the radio, turn them off. The radio won't interfere with the other
electronics.

I would have to find a way to add a fan to the Hammarlund 170.

It's lasted a long time without a fan, and it should last yet longer without
one. Most of my radios are from forty to sixty years old, and none of them
have fans. I consider all of them relible enough to leave powered up
indefinately. And, if one of their transformers or something should go up
in smoke, I really doubt a fan would have helped.


73, SR!

Frank Dresser